The following flow chart illustrates the fast percolation test procedure:
1) | Fill the percolation hole with water to a level that is no more than 6 inches over the aggregate. | |
2) | From a fixed reference point, determine, at 10-minute intervals, how much the water drops over the next 60 minutes. If 6 inches of water seeps away in less than 10 minutes, a shorter interval between measurements must be used. | |
3) | Refill the hole as necessary to prevent all water from seeping away. The level of the water must never exceed 6 inches in depth over the aggregate. | |
4) | The amount of the drop in the level of the water recorded for the final 10-minute period must be used to determine the percolation rate. |
NOTE: The minimum time in which a fast percolation test may be completed is 1 hour. The level of the water must never exceed 6 inches over the aggregate during a fast percolation test.
Nev. Admin. Code § 444.7964
NRS 439.200, 444.650